Built-In 2.4 GHz X Wireless Radio SystemCompatible with Nikon E-TTL / E-TTL IIGuide Number: 197′ at ISO 100 and 200mmZoom Range: 20-200mm (14mm with Panel)Tilts from -7 to 90°Rotates Left & Right 180°Wireless Master/Slave TTL FunctionalityRecycle Time: 1.5 Seconds at Full PowerHigh-Speed, 1st and 2nd Curtain SyncRange: 328′; 32 Channels; 5 Groups
